Behavior plugin - Making field mandatory in create screen based on multiple conditions

[Vidhya Mohan]

I'm trying to make the field production impact mandatory based on the values selected in 4 other fields. I want this on the create bug scree? can someone please tell me if this server side script is correct?

def selectCFValue1 = getFieldByName("Detected in (Test) Stage").getValue()
def selectCFValue2 = getFieldByName("Business Risk").getValue()
def selectCFValue3 = getFieldByName("Prod Defect Category").getValue()
def selectCFValue4 = getFieldByName("Defect Impact Type").getValue()
def targetField = getFieldByName("Production Impact")

if (selectCFValue1.getValue() == "5-Warranty" || selectCFValue1.getValue() == "7-Prod") &&       (selectCFValue2.getValue() == "1-Blocking") &&
(selectCFValue3.getValue() == "Ordering" || selectCFValue3.getValue() == "Selling") &&(selectCFValue4.getValue() == "Exceptions" || selectCFValue4.getValue() == "IT Tickets" || selectCFValue4.getValue() == "EXOs"|| selectCFValue4.getValue() == "Non-Processed"|| selectCFValue4.getValue() == "YY exceptions" || selectCFValue4.getValue() == "Pending ")
targetField.setRequired(true)
else
targetField.setRequired(false)